No, NASA does not own any part of the Grand Canyon. The Grand Canyon is primarily managed by the U.S. National Park Service as Grand Canyon National Park, a federally protected area that is part of the public domain.
However, NASA has used the Grand Canyon and its surrounding landscapes for scientific research and training purposes. The area’s rugged terrain and geology have been utilized for astronaut training, especially during the Apollo program, to simulate the surface of the Moon. Additionally, its unique geology provides a valuable site for studying planetary science and Earth’s history, which helps inform space exploration missions.
Ownership and management of the Grand Canyon remain under federal and tribal authorities, not NASA.